What drives the vegetation dynamics in the Hengduan Mountain region, southwest China: Climate change or human activity?
What drives the vegetation dynamics in the Hengduan Mountain region, southwest China: Climate change or human activity?
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是什么驱动了中国西南部横断山区的植被动态：气候变化还是人类活动？
DOI：
10.1016/j.ecolind.2019.106013
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发表时间：
2020-05
影响因子：
6.9
通讯作者：
Tong Miao
中科院分区：
文献类型：
--
作者：
Yin Le;Dai Erfu;Zheng Du;Wang Yahui;Ma Liang;Tong Miao
Quantitatively identifying the relative contributions of climate change and human activity to net primary productivity (NPP) is critical for understanding vegetation dynamics and maintaining regional carbon balances. This study focuses on the driving mechanisms of NPP changes and proposes a research framework for evaluating the relative impacts of climate change and human activity. Based on the Thornthwaite Memorial and CASA models, this study first determined the relative contributions of climate change and human activity to actual net primary productivity (ANPP) changes in the Hengduan Mountain region, and then analyzed the response of ANPP to major climate factors at the pixel scale. We found that the contribution of human activities (66.11%) to ANPP change was about twice that of climate change (33.89%) in the Hengduan Mountain region. The ANPP in the north and south region was mainly affected by temperature and precipitation respectively, while although implementing ecological restoration projects had been important for improving vegetation conditions across the Hengduan Mountain region, several human activities, such as overgrazing, sloping cropland reclamation, and urban expansion, were the main reasons for ANPP’s decrease, especially in dry-hot valley areas. There was a significant gradient difference between in how climate change and human activities influence the ANPP, human activity impacted ANPP more in high relief areas along the horizontal gradient, while climate change impacts on ANPP first decreased then increased with rising elevation along the vertical gradient. This study provides a theoretical basis and methodological reference for quantitatively evaluating ecosystems.
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DOI：
--
发表时间：
2007
期刊：
Journal of Yangtze River Scientific Research Institute
影响因子：
--
作者：
Zhang Bo-hua
通讯作者：
Zhang Bo-hua
DOI：
10.1016/j.scitotenv.2016.03.223
发表时间：
2016-09
期刊：
The Science of the total environment
影响因子：
--
作者：
Ying Zhang;Chaobin Zhang;Zhaoqi Wang;Yizhao Chen;Chengcheng Gang;R. An;Jian-long Li
通讯作者：
Ying Zhang;Chaobin Zhang;Zhaoqi Wang;Yizhao Chen;Chengcheng Gang;R. An;Jian-long Li
影响因子：
6.2
作者：
Hongfei Yang;Shaojie Mu;Jian-long Li
通讯作者：
Hongfei Yang;Shaojie Mu;Jian-long Li
影响因子：
8.7
作者：
F. M. Padilla;Beatriz Vidal;Joaquín Sánchez;F. Pugnaire
通讯作者：
F. M. Padilla;Beatriz Vidal;Joaquín Sánchez;F. Pugnaire
影响因子：
64.8
作者：
Seddon, Alistair W. R.;Macias-Fauria, Marc;Willis, Kathy J.
通讯作者：
Willis, Kathy J.